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Table 1 Audience figures in 100 000s of radio stations A and B for the last 20 quarters. Radio Station A 112 106 108 113 111 109 108 112 115 115 118 114 116 115 113 103 107 105 103 106 Radio Station B 98 101 100 99 100 99 100 98 96 97 98 87 88 92 98 99 96 102 104 100

Table 1 Audience figures in 100 000s of radio stations A and B for the last 20 quarters. Radio Station A 112 106 108 113 111 109 108 112 115 115 118 114 116 115 113 103 107 105 103 106 Radio Station B 98 101 100 99 100 99 100 98 96 97 98 87 88 92 98 99 96 102 104 100

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.5: Interpreting Data
Problem 1C
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Table 1 Audience figures in 100 000s of radio stations A and B for the last 20 quarters. Radio Station A 112 106 108 113 111 109 108 112 115 115 118 114 116 115 113 103 107 105 103 106 Radio Station B 98 101 100 99 100 99 100 98 96 97 98 87 88 92 98 99 96 102 104 100
Transcribed Image Text:Table 1 Audience figures in 100 000s of radio stations A and B for the last 20 quarters. Radio Station A 112 106 108 113 111 109 108 112 115 115 118 114 116 115 113 103 107 105 103 106 Radio Station B 98 101 100 99 100 99 100 98 96 97 98 87 88 92 98 99 96 102 104 100
(b) (i) Create boxplots for these two data sets (either drawn by hand or as a printout from Dataplotter or another suitable computer package). Include all the relevant information required for drawing boxplots as set out in Subsection 1.2 of Unit 11. The summary values can be displayed on the boxplots themselves or in a table to the side of the chart, as they appear in Dataplotter. (ii) Use the boxplot for radio station B to say whether the data are symmetric or skewed. If the data are skewed, then state whether they are skewed to the left or skewed to the right. What does this tell you about the spread of the data for radio station B? (iii) The advertising company tries to summarise what the boxplot for radio station A is saying. Are the following statements true or false? In each case justify your answer. (1) About one-quarter of the reporting periods for radio station A had less than 10 650 000 listeners. (2) About three-quarters of the reporting periods for radio station A had more than 11 150 000 listeners.
Transcribed Image Text:(b) (i) Create boxplots for these two data sets (either drawn by hand or as a printout from Dataplotter or another suitable computer package). Include all the relevant information required for drawing boxplots as set out in Subsection 1.2 of Unit 11. The summary values can be displayed on the boxplots themselves or in a table to the side of the chart, as they appear in Dataplotter. (ii) Use the boxplot for radio station B to say whether the data are symmetric or skewed. If the data are skewed, then state whether they are skewed to the left or skewed to the right. What does this tell you about the spread of the data for radio station B? (iii) The advertising company tries to summarise what the boxplot for radio station A is saying. Are the following statements true or false? In each case justify your answer. (1) About one-quarter of the reporting periods for radio station A had less than 10 650 000 listeners. (2) About three-quarters of the reporting periods for radio station A had more than 11 150 000 listeners.
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